Bunsen burner.



No. 728,296. PATENTED MAY 19, 1903.

v A. B. REDELL.

BUNSEN BURNER.

APPLICATION FILED MAR. 17, 1902.

N0 MODEL.

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UNITED STATES Patented May 19, 1903.

PATENT O FICE.

ALVIN B. REDELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO CHARLES R, LINDSAY, JR, OF CHICAGO, ILLINOIS.

BUNSENY BURNER.

SPEQIFICATION forming part Qf Letters Patent N0. 728,296, dated May 19, 1903.

Application filed March 1'7. 1902. Serial No, 98,614. (No model.)

T at whom) it may concern:

Be it known that I, ALVIN B. REDELL, acitizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Bunsen Burners, of which the following is aspecification.

The object of this invention, is the prod uction of a Bunsen" burner embodying the improvements hereinafter set forth.

In the accompanying drawings, Figure l is a side elevation' of a Bunsen burner embodying my improvements. Fig. 2 is a section on dotted line 2 2 of Fig. 1. Fig. 3 is a top plan flange B at its base, is internally screwview of the body portion of said burner. Fig. 4 is a similar View of the cap by means of Which the flow of gas is regulated.

tubular stem is externally screw-threaded,

and a ringA internally screw-threaded. The tubular stem A is provided at its upper end with a central conical stud A and has two openings A communicating with the interior of said tubular stem. Acap B, substantially cylindrical in form, of cone shape at its upper end and having the integral knurled threaded to correspond with the screw-threads upon the exterior of the tubular stem A and is adapted to be rotated on said stem by means of the knurled flange B". The cap B is providedat its upper end with a central orifice B adapted to be entered and closed by the conical upper end of the stud A 0 refers to a mixing-tube, having at its lower end the integral fiangeO, screw-threaded upon itsperiphery to correspond with the screw-threaded interior of the ring A The mixing-tube O is intended to be rigidlysecured-to the body portion A by means of this screw-threadconnection.

0 refers to air-openings formed in opposit sides of the mixing-tube O. I have sometimes provided three openings; but the number of openings manifestly will be governed by the size of each and the amount of gas used.

In use my improved burner is secured upon the end of a as-supply pipe by means of the socket A. as passing through said pipe ontore the socket A, passes through the tubular stem A and escapes through the openings A in the upper end of said tubular stem and through the orifice B into the mixingtube 0. The flow of gas is regulated by raising or lowering the cap. Air enters the mixing tube through the openings 0, and an inflammable mixture of air and gas is produced in said tube To shut 0d the gas, the cap B is turned upon the screw-threads of the tubular stern A? until the conical stud A closes the orifice B at the apex of the conical top of said cap.

I am aware that many slight changes maybe made in the embodiment herein shown of this invention without departing from the spirit and scope thereof. I therefore desire to have it understood that I do not limit myself to the specific construction herein set forth.

I claim as my invention- 1. In a Bunsen burner, in combination, an integral body. portion having a tubular externally-screw-threaded stem provided at its upper end with a central conical stud and a d ischarge-opening, and a ring screw-threaded upon its inner circumference; a cap having a screw-thread engagement with said stem, said cap being provided with a central. opening adapted to coincide with said stud; and a mixing-tube having a screw-thread connec-" tion withsaid ring.

2. Ina Bunsen burner, in combination, an

integral body portion having a tubularstem provided at its upper end with a stud and a discharge-opening, and a ringscrew-threaded' upon its inner circumference; a caphaving a rotative engagementjwith said stem and provided with an opening adapted to coincide with said stud; and a mixing-tube. having'a flange at one end, said flange being 'screw I threaded to engage the screw-threads upon the inner eircumference'of said ring."

3. In a Bunsenburner, in combination, an'

integral body portion having a socket'for seand a discharge-opening, and a ring screws threaded upon itsinner circumference; a cap threaded to engage the screw-threads upon for inclosing the upper end of said stern,said the inner circumference of said ring, said 10 cap being internally screw-threaded to cortube also having an air-opening in its wail. respond with the external screw-threads of said stem, said cap also having an openingin ALVIN REDELL its upper end adapted to be closed by the stud l \Vibnesses:

upon said stem; and a inixingmube having a L. L. MILLER, flange at one end, said flange being serew- GEO. L. GHINDAHL. 

